Answer: 60
Step-by-step explanation:
You have to use Pythagorean Theorem because the other side is not listed of the triangle
Pythagorean Theorem: a² + b² = c²
a² + 20² = 25²
a² + 400 = 625
625-400 = a²
a² = 225
Find the square root of 225 to find the missing length
= 15 (this is the missing length for QS
To find the perimeter, add all the sides...
15 + 20 +25 = 60
Answer:
she will use 4.
Step-by-step explanation:
kajsbsbsjajaja
Idk if you have any choices or not but it should look like 8 + 2x
How to get the answer: sum means addition, and twice a number is 2 times it. We don't know the number so we'll use x. Two times a number is 2x
And since we are adding we will put an addition sign
8 + 2x
Answer:
Step-by-step explanation:
Angle 
corresponds to the complement of the 
in the bigger triangle. See diagram in attachment.
This implies that,
Also since the triangles are similar, the sides are in the same proportion.
This implies that,
We multiply both sides by 15 to get,
We divide through by 3 to get,
The correct answer is D
